111SKIN Black Diamond Retinol Oil - Black Diamond

Start by using it 2-3 times per week, and gradually increase frequency as your skin tolerates it. You can eventually use it nightly.

Yes, this oil is suitable for all skin types, including sensitive skin. However, it's recommended to start slowly to assess your skin's tolerance.

Apply the oil after cleansing and before moisturizing.

This is a common side effect of retinol. Reduce the frequency of use, and ensure you are using a hydrating moisturizer.

It is best to use this oil in your evening routine. Always use a broad-spectrum sunscreen during the day.

Visible improvements in fine lines, wrinkles, and brightness may be noticeable within four weeks of consistent use.

Store the oil in a cool, dark place away from direct sunlight.

Yes, but avoid using it simultaneously with harsh exfoliants. It is always a good idea to introduce new products gradually.

Reduce the frequency of use or mix a drop of the oil with your moisturizer to dilute the concentration. Consult a dermatologist if irritation persists.

Ensure consistent use and allow sufficient time for results. Results may vary and take up to four weeks to become noticeable.